Named by P.J. Dunn and R.S. Rouse in 1979 after Nils Gustaf Sundius (21 May 1886, Banker, Östergötland, Sweden - 6 December 1976, Djursholm, Danderyd, Stockholm County, Sweden), Swedish mineralogist, in recognition of his contributions to the mineralogy of Langban (Sweden). Pronounced sūn'-dē-ūs-ite.

The name was used previously for a hypothetical amphibole, but its use not widely recognized.

Localities for Sundiusite

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality.
The symbol next to localities in the list
can be used to jump to that position on the map.

(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.